- gray fibers
- unmyelinated nerve fibers, found largely, but not exclusively, in the sympathetic nerves.
Medical dictionary. 2011.
gray fibers
Look at other dictionaries:
gray matter — gray′ mat ter n. 1) anat. a reddish gray nerve tissue of the brain and spinal cord, consisting chiefly of nerve cell bodies, with few nerve fibers Compare white matter 2) Informal. brains or intellect … From formal English to slang
gray matter — n. 1. grayish nerve tissue of the brain and spinal cord, consisting chiefly of nerve cells, with few nerve fibers: distinguished from WHITE MATTER 2. Informal intellectual capacity; brains … English World dictionary
Gray matter — The cortex of the brain which contains nerve cell bodies. The gray matter is in contrast to the white matter, the part of the brain that contains myelinated nerve fibers. The gray matter is so named because it in fact appears gray. The white… … Medical dictionary
gray matter — noun greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons • Syn: ↑grey matter, ↑grey substance, ↑gray substance, ↑substantia grisea • Hypernyms: ↑nervous tissue, ↑nerve… … Useful english dictionary
gray matter — noun Date: 1840 1. neural tissue especially of the brain and spinal cord that contains nerve cell bodies as well as nerve fibers and has a brownish gray color 2. brains, intellect … New Collegiate Dictionary
Gray ramus communicans — Infobox Anatomy Name = PAGENAME Latin = ramus communicans griseus nervi spinalis GraySubject = 208 GrayPage = 920 Caption = Scheme showing structure of a typical spinal nerve. 1. Somatic efferent. 2. Somatic afferent. 3,4,5. Sympathetic efferent … Wikipedia
gray matter — 1. Anat. nerve tissue, esp. of the brain and spinal cord, that contains fibers and nerve cell bodies and is dark reddish gray. Cf. white matter. 2. Informal. brains or intellect. [1830 40] * * * … Universalium
gray substance — noun greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons • Syn: ↑grey matter, ↑gray matter, ↑grey substance, ↑substantia grisea • Hypernyms: ↑nervous tissue, ↑nerve tissue … Useful english dictionary
gray matter — neural tissue of the brain and spinal cord containing both nerve fibers and nerve cell bodies … English contemporary dictionary
Corticopontine fibers — Brain: Corticopontine fibers Coronal section through mid brain. 1. Corpora quadrigemina. 2. Cerebral aqueduct. 3. Central gray stratum. 4. Interpeduncular space. 5. Sulcus lateralis. 6. Substantia nigra. 7. Red nucleus of … Wikipedia
